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Ive been trying to figure out this vigenere cipher for a while now and not having much luck.

cipher uses A-Z (0-25) and uses SPACE for 26. I'm trying to decode an encoded message but I don't have the key.

I only know of one way to solve this (by comparing letter frequencies) but my cipher is super long, it would take me forever to compare everything.

Does anyone know of a program or tool that could help with this? Any help/advice is appreciated!

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put on hold as off-topic by Maarten Bodewes, otus, Henrick Hellström, yyyyyyy, Gilles Nov 22 at 19:38

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It sounds like you're trying to do it by hand. Did you try googling for a frequency analyzer online? This is what I found – rath Nov 22 at 4:32
I'm voting to close this question as off-topic because tool recommendations are off topic here. – otus Nov 22 at 8:04

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